From owner-freebsd-performance@FreeBSD.ORG Sun Mar 24 14:11:46 2013 Return-Path: Delivered-To: freebsd-performance@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by hub.freebsd.org (Postfix) with ESMTP id 1136F51D for ; Sun, 24 Mar 2013 14:11:46 +0000 (UTC) (envelope-from bill.totman@gmail.com) Received: from mail-da0-x235.google.com (mail-da0-x235.google.com [IPv6:2607:f8b0:400e:c00::235]) by mx1.freebsd.org (Postfix) with ESMTP id E0099CC0 for ; Sun, 24 Mar 2013 14:11:45 +0000 (UTC) Received: by mail-da0-f53.google.com with SMTP id n34so1738600dal.40 for ; Sun, 24 Mar 2013 07:11:45 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=x-received:message-id:date:from:user-agent:mime-version:to:cc :subject:references:in-reply-to:content-type :content-transfer-encoding; bh=uLDUUJSXGCgvYZuIh8jhol7ae1Ux4u1HYwDxNUL8UKU=; b=RiseHGnSaqSZroQ7EHp4AQjWuY9ccVn2quviKixIxRUGQWmt/qSiUzU0bZCp53tAy/ 66enAmnD+LUMBUKXNsU7x9nEYkyW0LQprKVN9/cnhFsGUXSdCFLnOZnE752OfUds9c68 4usvKCwWTu7NHnVlTsQTM7l6z9GqaIoahqdKXzyFVTEDRUkMd63MWUJprA8qLQ9w4y0K 4QLYpRoVuJovGr85rGvk1i7xxDrKSha7BXBgGRcuq/Sn80PLUw573mqTLnwkpT1XhpEL rMLVm71VzyqhYynuBtXUeAZjeyXqbg03UiiNnEPHxQs9CddbznuQWV+RoHW1tZr52ihW 6n0Q== X-Received: by 10.66.49.202 with SMTP id w10mr13043559pan.174.1364134305666; Sun, 24 Mar 2013 07:11:45 -0700 (PDT) Received: from Bills-MacBook-Pro.local (cpe-98-14-156-98.nyc.res.rr.com. [98.14.156.98]) by mx.google.com with ESMTPS id sd8sm3544224pbb.33.2013.03.24.07.11.43 (version=TLSv1 cipher=ECDHE-RSA-RC4-SHA bits=128/128); Sun, 24 Mar 2013 07:11:44 -0700 (PDT) Message-ID: <514F099D.9040005@gmail.com> Date: Sun, 24 Mar 2013 10:11:41 -0400 From: Bill Totman User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.8; rv:17.0) Gecko/20130307 Thunderbird/17.0.4 MIME-Version: 1.0 To: davide.damico@contactlab.com Subject: Re: FreeBSD 9.1 vs CentOS 6.3 References: <1363998883.22604.YahooMailNeo@web141401.mail.bf1.yahoo.com> <5d10e2a0b0f6477293459a26df1fc272@sys.tomatointeractive.it> In-Reply-To: <5d10e2a0b0f6477293459a26df1fc272@sys.tomatointeractive.it> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Cc: freebsd-performance@freebsd.org X-BeenThere: freebsd-performance@freebsd.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: Performance/tuning List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 24 Mar 2013 14:11:46 -0000 On 3/23/13 3:44 AM, Davide D'Amico wrote: > Il 23.03.2013 01:34 Paul Pathiakis ha scritto: >> Hi, >> >> There are several things about this that are highly suspect. >> >> First, wipe out the hardware RAID. The processor doing RAID >> computation is, probably, MUCH slower than a core on the CPU. Even if >> it's RAID-1 (Simple Mirror) this RAID card is performing tasks that is >> does not need to do including replicating writes to two targets from >> the controller or checking it's cache, battery, etc. If it's possible >> to disable the onboard cache, do it. > > Hi Paul, > thanks for your suggestions (some of them I've applied before starting > any consideration, like disabling all on-disk caches or controller > buffers) I'll try next monday. > > Anyway, the fact is that using the same hardware configuration > (raid1+raid10) I saw that a centos 6.x outperformed freebsd 9.1. > Another test I made yesterday was: on the same hardware I installed > vmware esx 5.x and created a vm with centos inside it. The result was > really impressive: the centos vm outperformed the 'real' freebsd 9.1 > too and checking vmware performances graphs I didn't see any huge need > for a massive throughput (I saw values from KBps to 10MBps), instead I > saw a big use of CPU (using OLTP tests with a concurrency of 32 > threads it's performaces began to slow down). > So, what happened when you installed FreeBSD 9.1 in the VM? How did the 'fake' FreeBSD 9.1 compare 1) to the 'real', and 2) to either of the CentOS installations? -bt > I don't know is using some magic value for HZ or setting some trick > with scheduler, I could gain something: I hope so, because I don't > want to "pinguinate" my farm :) > > Thanks, > d. > > _______________________________________________ > freebsd-performance@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-performance > To unsubscribe, send any mail to > "freebsd-performance-unsubscribe@freebsd.org"